Kumar, H. and Radha, J. C. and Ranganathaiah, C. and Siddaramaiah (2007) Physico-mechanical and free volume behaviour of guar gum filled polyurethane/polyacrylonitrile biodegradable composites. European Polymer Journal, 43 (4). 1580 - 1587. ISSN 0014-3057
Full text not available from this repository. (Request a copy)Abstract
A series of different weight ratios of guar gum viz. 5, 10, 20 and 30 were incorporated into polyurethane/polyacrylonitrile (PU/PAN, 50/50) semi interpenetrating polymer networks (SIPNs) using polyethylene glycol-400, 4,4′-diphenyl methane diisocyanate, acrylonitrile, benzoyl peroxide and new metallic catalyst. The obtained polymer composites were subjected to biodegradation studies using specific fungi Aspergillus niger. The composites are characterized for physico-mechanical properties like density and tensile behaviour of the specimens before and after biodegradation. The positron annihilation lifetime spectroscopy (PALS) was used to monitor the content of free volume before and after biodegradation. The extent of degradation was examined by change in tensile behaviour and surface morphology. The influences of fungi on mechanical and morphological behaviour of filled IPNs are found to be interesting. The free volume changes in the composite systems correlates well with the mechanical properties.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Biodegradable, SIPN, PALS, |
| Subjects: | D Physical Science > Physics |
| Divisions: | Department of > Physics |
| Depositing User: | C Swapna Library Assistant |
| Date Deposited: | 18 Sep 2019 05:36 |
| Last Modified: | 18 Sep 2019 05:36 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/8227 |
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